Moveit2 Tutorial 3

# Visualizing In RViz

Run Docker - Open a new terminal and run:

xhost +local:docker && sudo docker run -it --net=host --ipc=host --pid=host --env="DISPLAY=$DISPLAY" --env="QT_X11_NO_MITSHM=1" --env="XAUTHORITY=$XAUTH" --volume="$XAUTH:$XAUTH"   -e LIBGL_ALWAYS_SOFTWARE=1  moveit/moveit2:main-jazzy-tutorial-source

Change the directory to hellow_moveit package

cd ~/ws_moveit/src/hello_moveit/

Open package.xml with nano

sudo nano package.xml

Add this line of code

<depend>moveit_visual_tools</depend>

It will look like this:
Pasted image 20250217092814.png

Press "Ctr + O" to write, press Enter to confirm , Press "Ctr +X" to exit it.

Open CMakeLists.txtl with nano

sudo nano CMakeLists.txt

Add this line to the section of find_package statements:

find_package(moveit_visual_tools REQUIRED)

It will look like this:
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Add this line to the session of "the ament_target_dependencies"

"moveit_visual_tools"

It will look like this:
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Press "Ctr + O" to write, press Enter to confirm , Press "Ctr +X" to exit it.

Open hello_moveit.cpp with nano

sudo nano src/hello_moveit.cpp

add this line:

#include <moveit_visual_tools/moveit_visual_tools.h>

It will look like this:
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Press "Ctr + O" to write, press Enter to confirm , Press "Ctr +X" to exit it.

colcon build the ROS package

cd ~/ws_moveit/ && colcon build --packages-select hello_moveit

source the newly build ROS package

cd ~/ws_moveit/ && source install/setup.bash

Save the state of the docker.

*Open a new tab of terminal, clicking this:

You will see new tab will be opened*
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Use the new tab, find the current running docker ID

docker ps

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**Copy your docker ID here!

save and commit the docker (Replace with your docker ID)

sudo docker commit {docker_id}  moveit/moveit2:main-jazzy-tutorial-source

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This will save your work. If you are not doing it properly, you will lose your work!

***Now return to your "previous tab" running Docker, and exit it.

exit

More coding

Run Docker - Open a new terminal and run:

xhost +local:docker && sudo docker run -it --net=host --ipc=host --pid=host --env="DISPLAY=$DISPLAY" --env="QT_X11_NO_MITSHM=1" --env="XAUTHORITY=$XAUTH" --volume="$XAUTH:$XAUTH"   -e LIBGL_ALWAYS_SOFTWARE=1  moveit/moveit2:main-jazzy-tutorial-source

Change the directory to hellow_moveit package

cd ~/ws_moveit/src/hello_moveit/

Open hello_moveit.cpp with nano

sudo nano src/hello_moveit.cpp

Add this line at the top:

#include <thread>  // <---- add this to the set of includes at the top

It will look like this:
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Add this line in the Main function:

  // We spin up a SingleThreadedExecutor for the current state monitor to get
  // information about the robot's state.
  rclcpp::executors::SingleThreadedExecutor executor;
  executor.add_node(node);
  auto spinner = std::thread([&executor]() { executor.spin(); });

It will look like this:
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Add this line at the end:

spinner.join();  // <--- Join the thread before exiting

It will look like this:
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Press "Ctr + O" to write, press Enter to confirm , Press "Ctr +X" to exit it.

Open hello_moveit.cpp with nano

sudo nano src/hello_moveit.cpp

Create and Initialize MoveItVisualTools

Add this code:

  // Construct and initialize MoveItVisualTools
  auto moveit_visual_tools =
      moveit_visual_tools::MoveItVisualTools{ node, "base_link", rviz_visual_tools::RVIZ_MARKER_TOPIC,
                                              move_group_interface.getRobotModel() };
  moveit_visual_tools.deleteAllMarkers();
  moveit_visual_tools.loadRemoteControl();

It will look like this:
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Add this code:

  // Create a closure for updating the text in rviz
  auto const draw_title = [&moveit_visual_tools](auto text) {
    auto const text_pose = [] {
      auto msg = Eigen::Isometry3d::Identity();
      msg.translation().z() = 1.0;  // Place text 1m above the base link
      return msg;
    }();
    moveit_visual_tools.publishText(text_pose, text, rviz_visual_tools::WHITE, rviz_visual_tools::XLARGE);
  };
  auto const prompt = [&moveit_visual_tools](auto text) { moveit_visual_tools.prompt(text); };
  auto const draw_trajectory_tool_path =
      [&moveit_visual_tools, jmg = move_group_interface.getRobotModel()->getJointModelGroup("manipulator")](
          auto const trajectory) { moveit_visual_tools.publishTrajectoryLine(trajectory, jmg); };

It will look like this:
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Add this code:

// Create a plan to that target pose
prompt("Press 'Next' in the RvizVisualToolsGui window to plan");
draw_title("Planning");
moveit_visual_tools.trigger();

It will look like this:
Pasted image 20250217103349.png

Modify the code below (Replace it by copy and paste):

  // Execute the plan
  if (success)
  {
    draw_trajectory_tool_path(plan.trajectory);
    moveit_visual_tools.trigger();
    prompt("Press 'next' in the RvizVisualToolsGui window to execute");
    draw_title("Executing");
    moveit_visual_tools.trigger();
    move_group_interface.execute(plan);
  }
  else
  {
    draw_title("Planning Failed!");
    moveit_visual_tools.trigger();
    RCLCPP_ERROR(logger, "Planning failed!");
  }

it will look like this:
Pasted image 20250217104128.png

Press "Ctr + O" to write, press Enter to confirm , Press "Ctr +X" to exit it.

colcon build the ROS package

cd ~/ws_moveit/ && colcon build --packages-select hello_moveit

source the newly build ROS package

cd ~/ws_moveit/ && source install/setup.bash

{Optional} If you have lost track of the code and encounter a compilation error, you can replace the entire code by copying and pasting this.

hello_moveit.cpp

and colcon build the ROS package again

cd ~/ws_moveit/ && colcon build --packages-select hello_moveit

source the newly build ROS package

cd ~/ws_moveit/ && source install/setup.bash

Save the state of the docker.

*Open a new tab of terminal, clicking this:

You will see new tab will be opened*
Pasted image 20250213162851.png

Use the new tab, find the current running docker ID

docker ps

Pasted image 20250213163031.png

**Copy your docker ID here!

save and commit the docker (Replace with your docker ID)

sudo docker commit {docker_id}  moveit/moveit2:main-jazzy-tutorial-source

Pasted image 20250213163237.png

This will save your work. If you are not doing it properly, you will lose your work!

***Now return to your "previous tab" running Docker, and exit it.

exit

Enable visualizations in RViz

Run Docker - Open a new terminal and run:

xhost +local:docker && sudo docker run -it --net=host --ipc=host --pid=host --env="DISPLAY=$DISPLAY" --env="QT_X11_NO_MITSHM=1" --env="XAUTHORITY=$XAUTH" --volume="$XAUTH:$XAUTH"   -e LIBGL_ALWAYS_SOFTWARE=1  moveit/moveit2:main-jazzy-tutorial-source

Run the RViz

ros2 launch moveit2_tutorials demo.launch.py

Uncheck “MotionPlanning” in the “Displays” tab to hide it. We aren’t going to be using the “MotionPlanning” plugin for this next part.

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To add the buttons to interact with the prompts we added to our program open the dialog with the “Panels/Add New Panel” menu:

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Finally, we need to add a Marker Array to render the visualizations we’ve added. Click on the “Add” Button in the “Displays” panel.

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Scroll to the bottom of the items in the Displays panel and edit the topic that the new Marker Array is using to /visualization marker array.
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You are now ready to run your new program with visualizations.

In a new terminal, go to the workspace, source the workspace, and run hello_moveit:

xhost +local:docker && sudo docker run -it --net=host --ipc=host --pid=host --env="DISPLAY=$DISPLAY" --env="QT_X11_NO_MITSHM=1" --env="XAUTHORITY=$XAUTH" --volume="$XAUTH:$XAUTH"   -e LIBGL_ALWAYS_SOFTWARE=1  moveit/moveit2:main-jazzy-tutorial-source

ros2 run hello_moveit hello_moveit

You’ll notice that your program has stopped with a log that looks like this:
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Click the Next button in RViz and see your application advance.
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Go to Tutorial 4

Reference : MoveIt Quickstart in RViz — MoveIt Documentation: Rolling documentation